28358122 has 8 divisors (see below), whose sum is σ = 45809316. Its totient is φ = 13088352.

The previous prime is 28358119. The next prime is 28358123. The reversal of 28358122 is 22185382.

It can be written as a sum of positive squares in 2 ways, for example, as 26842761 + 1515361 = 5181^2 + 1231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28358123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545323 + ... + 545374.

Almost surely, 2^28358122 is an apocalyptic number.

28358122 is a deficient number, since it is larger than the sum of its proper divisors (17451194).

28358122 is a wasteful number, since it uses less digits than its factorization.

28358122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090712.

The product of its digits is 7680, while the sum is 31.

The square root of 28358122 is about 5325.2344549325. The cubic root of 28358122 is about 304.9480230339.

The spelling of 28358122 in words is "twenty-eight million, three hundred fifty-eight thousand, one hundred twenty-two".